.middle .content{
    border: 1px solid #e8dede;
}
.middle .content .login-content{
    width:480px;
    height:400px;
    background: white;
    margin:20px auto;
}
.middle .content .login-content .top-content{
    height:50px;
    width:440px;
    margin-left:20px;
    line-height: 50px;
    border-bottom: 1px solid gainsboro;
}
.middle .content .login-content .top-content h3{
    float:left;
    font-size:20px;
    border-bottom: 3px solid purple;
    box-sizing: border-box;
    height:50px;
}
.middle .content .login-content .top-content a{
    float:right;
    font-size:20px;
    color:skyblue;
}
.middle .content .login-content form{
    margin-left:20px;
}
.middle .content .login-content form>input{
    height:50px;
    width:440px;
    margin-top: 20px;
    border-radius: 5px;
    font-size:20px;
    text-indent: 1em;
    border:1px solid gainsboro;
}
.middle .content .login-content form .form-item{
    width:440px;
    height:50px;
    line-height: 50px;
    margin-top: 20px;
}
.middle .content .login-content form .form-item input{
    float:left;
    height:50px;
    line-height: 50px;
}
.middle .content .login-content form .form-item a{
    float:right;
}
.middle .content .login-content form .btn{
    background: deepskyblue;
    margin-left:-20px;
}